Water quality analyzer suitable for pressure environment

Abstract

The invention discloses a water quality analyzer suitable for a pressure environment, and belongs to the technical field of water quality detection.The water quality analyzer comprises a base, a sampling mechanism with a circulating pump is arranged at the top end of the base, the circulating pump is fixedly installed at the top end of the base, and a sampling pipe is fixedly installed at the top end of the base; a hose body is installed between the output end of the circulating pump and the sampling pipe in a communicating mode, an exhaust assembly is arranged at the position, close to the top end of the hose body, of the base, and the exhaust assembly comprises a fixing plate fixedly installed at the top end of the base. A small amount of air in the hose is effectively pumped out, the pressure of an air column at the upper end of the quantitative pipe is balanced, on the basis, the liquid level of the quantitative pipe can be accurately controlled, waste liquid is quantitatively guided into the sampling pipe, the sampling amount error caused by the influence of the air column is avoided, an accurate water sample is provided for subsequent water quality analysis, and the accuracy of an analysis result is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality analyzer suitable for use in a pressure environment. Background Art

[0002] Accurate water quality analysis is crucial in many fields, including environmental monitoring, industrial production, and water resource management. As a key device for acquiring water quality data, the performance and reliability of water quality analyzers directly impact the accuracy of analysis results and the scientific nature of decision-making. This is especially true in pressure-sensitive environments, such as deep-sea exploration, high-pressure pipeline monitoring, and water quality monitoring in specialized industrial processes.

[0003] First, during the sampling process, air often enters the sampling line due to the pressure environment. This air forms an air column in the line, resulting in inaccurate sampling. Second, the sampling line is prone to wear and tear over time due to the pressure limit and the erosion of the water sample. Once the line is damaged, it can cause water sample leakage, affecting the normal sampling process. Therefore, the lack of an effective emergency response mechanism makes it impossible to prevent water sample leakage in a timely manner, thereby increasing the risk and uncertainty of the sampling process. Summary of the Invention

[0004] The purpose of the present invention is to provide a water quality analyzer suitable for use in a pressure environment, so as to solve the problem raised in the above background technology that due to the limit of pressurized quantification and the flushing of water samples, wear, rupture, etc. are prone to occur. Once the pipeline is damaged, it will cause water sample leakage, affecting the normal progress of the sampling process.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A water quality analyzer suitable for a pressure environment, comprising a base, a sampling mechanism with a circulation pump is provided at the top of the base, the circulation pump is fixedly mounted on the top of the base, a sampling tube is fixedly mounted on the top of the base, a hose body is connected and mounted between the output end of the circulation pump and the sampling tube, an exhaust assembly is provided on the base near the top of the hose body, the exhaust assembly comprises a fixed plate fixedly mounted on the top of the base, a driving device is fixedly mounted on the surface of the fixed plate, a plurality of sleeves are fixedly mounted on the output shaft of the driving device, a push rod is slidably mounted inside the sleeve, a pressure wheel for pressurizing and exhausting is rotatably mounted on the free end of the push rod, a damping spring is mounted between the push rod and the inner wall of the sleeve, a baffle is fixedly mounted on the surface of the fixed plate, and an auxiliary air pipe for supplementary exhaust is connected and mounted on the surface of the hose body near the baffle.

[0006] As a preferred technical solution of the present invention, an arc-shaped support plate is fixedly installed on the outer surface of the hose body, and a magnetic ring for sealing the hose body is adhered to the inside of the hose body.

[0007] As a preferred technical solution of the present invention, a rubber strip composed of multiple rubber protrusions is fixedly installed on the outer surface of the pressure wheel, and a guide groove is provided between every two of the rubber strips. A cleaning sponge is slidably installed inside the push rod, and a pressure spring is fixedly installed between the cleaning sponge and the inner wall of the push rod. The surface of the cleaning sponge close to the rubber protrusion is curved.

[0008] As a preferred technical solution of the present invention, an auxiliary mechanism with a breathable film is provided on one side of the hose body, an exhaust pipe is connected and installed on the surface of the hose body, a one-way valve is installed on the exhaust pipe, and the breathable film for breathable and waterproof functions is connected and installed on the exhaust pipe.

[0009] As a preferred technical solution of the present invention, a quantitative component with a quantitative cylinder is provided between the output end of the circulation pump and the hose body. The quantitative cylinder is fixedly installed on the top of the base and is communicatively installed between the hose body and the output end of the circulation pump.

[0010] As a preferred technical solution of the present invention, a filter plate is installed inside the metering cylinder, a motor is fixedly installed on the surface of the metering cylinder, a rotating rod is rotatably installed inside the metering cylinder, the output shaft of the motor and the rotating rod are fixedly connected, a scraper is fixedly installed on one end of the rotating rod close to the filter, and the scraper slides on the surface of the filter plate.

[0011] As a preferred technical solution of the present invention, a spiral impeller for stirring the liquid inside the metering cylinder is fixedly mounted on the outer surface of the rotating rod, and a resin layer is mounted on the surface of the spiral impeller.

[0012] As a preferred technical solution of the present invention, a pressure balance column is fixedly installed inside the rotating rod, a rotating plate is rotatably installed on the outer surface of the rotating rod, an air suction cylinder connected to the inside of the rotating rod for achieving pressure balance is installed on the outer surface of the metering cylinder, and a breathable strip is opened on the surface of the rotating rod.

[0013] As a preferred technical solution of the present invention, a water container is fixedly installed on the top of the base, a circulating water pipe is installed between the output end of the circulating pump and the water container, a water inlet pipe is installed between the input end of the circulating pump and the water container, a water outlet pipe is installed between the output end of the circulating pump and the quantitative cylinder, and sampling valves are installed on both the water inlet pipe and the water outlet pipe.

[0014] As a preferred technical solution of the present invention, an analyzer body for detecting water samples inside the sampling tube is installed on the top of the base, and the analyzer body uses multiple detection rods inserted in layers inside the sampling tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. During the sampling process, the present invention first collects an excess amount of water sample through a circulating pump, and then uses a driving mechanism to drive a pressure wheel to indirectly pressurize the hose body, effectively extracting a small amount of air inside the hose and balancing the pressure of the air column at the upper end of the quantitative tube. On this basis, the liquid level of the quantitative tube can be accurately controlled to achieve quantitative introduction of waste liquid into the sampling tube, avoiding sampling error caused by the influence of the air column, providing accurate water samples for subsequent water quality analysis, and greatly improving the accuracy of the analysis results.

[0016] 2. In the present invention, when the hose body is in long-term contact and friction with the pressure wheel and the internal air pressure changes due to damage, the pressure wheel can pressurize and deform the magnetic ring inside the hose body under the action of the damping spring, promoting symmetrical deformation to achieve magnetic sealing, thereby timely sealing the end of the hose body that is in contact with the pressure wheel. This design effectively avoids the problem of waste liquid leakage caused by damage to the hose, ensures the safety and stability of the sampling process, and reduces the risk of equipment damage and environmental pollution.

[0017] 3. The auxiliary air pipe provided between the baffle and the hose body of the present invention can temporarily play the role of pressurizing the liquid in the special case that the hose body is damaged by repeated friction with the pressure wheel. When the hose body has a sealing problem, the auxiliary air pipe can replenish the liquid in time to maintain the pressure balance in the sampling pipeline, ensuring that the sampling process will not be interrupted due to hose failure, thereby ensuring the continuity and stability of the sampling work and improving the reliability and adaptability of the equipment.

[0018] 4. The filter plate and the spiral impeller installed inside the quantitative cylinder of the present invention cooperate with each other, which not only stirs the liquid inside the quantitative cylinder, promotes the uniform mixing of the water sample, and avoids the detection error caused by uneven water sample, but also can effectively filter out impurities and particulate matter in the water sample, reduce the interference of impurities on the detection instrument, and further improve the stability and reliability of water quality detection.

[0019] 5. The present invention forms a complete pressure balance mechanism by installing a pressure balance column inside the rotating rod, and cooperating with the air suction cylinder on the outer surface of the quantitative cylinder and the rotating plate with a breathable strip rotatably installed on the outer surface of the rotating rod. During the sampling and analysis process, the mechanism can adjust and maintain the pressure stability in time according to the pressure changes inside the quantitative cylinder, ensuring that the water sample can be output to the sampling tube at a stable speed and pressure, thereby ensuring the stable operation of the entire water quality analyzer under pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the sampling mechanism of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in FIG; Figure 4 It is a schematic diagram of the exhaust assembly structure of the present invention; Figure 5 This is a schematic diagram of the auxiliary trachea structure of the present invention; Figure 6 This is a schematic diagram of the magnetic ring structure of the present invention; Figure 7 It is a schematic diagram of the structure of the pressing wheel of the present invention; Figure 8 Schematic diagram of the cleaning sponge structure of the present invention; Figure 9 Schematic diagram of the spiral impeller structure of the present invention; Figure 10 It is a schematic structural diagram of the pressure balance column of the present invention.

[0021] Figure: 1, base; 2, sampling mechanism; 21, circulation pump; 22, water inlet pipe; 23, water container; 24, water outlet pipe; 25, quantitative component; 251, quantitative cylinder; 252, filter plate; 253, motor; 254, rotating rod; 255, spiral impeller; 256, suction cylinder; 257, rotating plate; 258, scraper; 259, pressure balance column; 26, exhaust component; 261, driving device; 262, fixed plate; 263, baffle Plate; 264, auxiliary air pipe; 265, pressure wheel; 266, rubber bump; 267, push rod; 268, sleeve; 269, cleaning sponge; 2610, pressure spring; 2611, damping spring; 2612, support plate; 2613, magnetic ring; 2614, guide groove; 27, hose body; 28, sampling tube; 29, analyzer body; 3, auxiliary mechanism; 31, breathable film; 32, one-way valve; 33, exhaust pipe. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-10The present invention provides a water quality analyzer suitable for use in a pressure environment, comprising a base 1. A sampling mechanism 2 with a circulation pump 21 is provided at the top of the base 1. The circulation pump 21 is fixedly installed at the top of the base 1. A sampling tube 28 is fixedly installed at the top of the base 1. A hose body 27 is installed between the output end of the circulation pump 21 and the sampling tube 28. An analyzer body 29 for detecting water samples inside the sampling tube 28 is installed at the top of the base 1, and the analyzer body 29 uses multiple detection rods to be layered and inserted inside the sampling tube 28.

[0024] The circulating pump 21 acts as a power source, sucking in water samples from the water body to be tested through the input end. After internal compression, the water samples are transported from the output end through the hose body 27 to the sampling tube 28. The hose body 27 serves to connect and transmit water samples. Its material and structural design can adapt to certain pressure changes, ensuring that the water samples are not disturbed by external pressure during transmission and stably enter the sampling tube 28, thereby improving sampling accuracy. Under pressure, the hose body 27 can play a certain buffering role. When the external pressure suddenly changes, its own elasticity can absorb and release part of the pressure, preventing the pressure shock from causing damage to the circulating pump 21 and the sampling tube 28, thereby protecting the safety of the equipment. Water samples at different depths may differ in temperature, dissolved oxygen, microbial content, pollutant distribution, etc. Multiple detection rods are inserted in layers, which can simultaneously detect water samples at different depths in the sampling tube 28 and obtain more comprehensive and accurate water quality information.

[0025] In the technical solution of the embodiment of the present application, an exhaust assembly 26 is provided at the top of the base 1 near the hose body 27, and the exhaust assembly 26 includes a fixed plate 262 fixedly installed on the top of the base 1, and a driving device 261 is fixedly installed on the surface of the fixed plate 262. The output shaft of the driving device 261 is fixedly installed with multiple sleeves 268, and a push rod 267 is slidably installed inside the sleeve 268. The free end of the push rod 267 is rotatably installed with a pressure wheel 265 for pressurized exhaust. A damping spring 2611 is installed between the push rod 267 and the inner wall of the sleeve 268, and a baffle 263 is fixedly installed on the surface of the fixed plate 262, and an auxiliary air pipe 264 for supplementary exhaust is connected and installed on the surface of the hose body 27 near the baffle 263.

[0026] Among them, the circulating pump 21 draws the water sample into the quantitative tube. After the sampling valve is closed, the quantitative tube, the water container 23 and the sampling tube 28 are separated. The driving device 261 drives the fixed plate 262 to rotate, and the fixed plate 262 drives multiple sleeves 268 to rotate. The push rod 267 in the sleeve 268, under the action of the damping spring 2611, causes the pressure wheel 265 to intermittently pressurize the hose body 27. The rolling pressure wheel 265 squeezes out a small amount of air inside the hose body 27. After balancing the pressure, the pressure wheel 265 controls the liquid level to achieve accurate quantitative sampling. On this basis, the liquid level in the quantitative tube can be accurately controlled to achieve quantitative introduction of waste liquid into the sampling tube 28, avoiding the sampling quantity error caused by the influence of the air column, providing accurate water samples for subsequent water quality analysis, and greatly improving the accuracy of the analysis results.

[0027] In some embodiments, an arc-shaped support plate 2612 is fixedly mounted on the outer surface of the hose body 27 , and a magnetic ring 2613 for sealing the hose body 27 is adhered to the inside of the hose body 27 .

[0028] Among them, the arc-shaped support plate 2612 on the outer surface of the hose body 27 plays a certain supporting role. When the hose body 27 is in long-term contact and friction with the pressure wheel 265 and the internal air pressure changes due to damage, the pressure wheel 265 can pressurize the magnetic ring 2613 inside the hose body 27 under the action of the damping spring 2611. The magnetic ring is made of magnetic rubber material, so that the magnetic ring can be deformed, and when the magnetic ring is symmetrically deformed, the two symmetrical semi-circular rings are close and magnetically adsorbed and fit together, which can timely seal the interior of the hose body 27. This design effectively avoids the problem of waste liquid leakage caused by damage to the hose body 27, ensures the safety and stability of the sampling process, and reduces the risk of equipment damage and environmental pollution.

[0029] In some embodiments, a rubber strip consisting of multiple rubber bumps 266 is fixedly installed on the outer surface of the pressure wheel 265, and a guide groove 2614 is provided between every two of the rubber strips. A cleaning sponge 269 is slidably installed inside the push rod 267, and a pressure spring 2610 is fixedly installed between the cleaning sponge 269 and the inner wall of the push rod 267. The surface of the cleaning sponge 269 close to the rubber bump 266 is curved.

[0030] Among them, when the driving device 261 drives the pressure wheel 265 to rotate, the rubber protrusion 266 is in full contact with the hose body 27, and the hose body 27 is pressurized and exhausted through friction. At this time, the outer surface of the pressure wheel 265 is composed of a rubber strip composed of rubber protrusions 266, which increases the friction with the hose body 27, making the pressurization and exhaust process more efficient and stable, ensuring that the air in the hose body 27 can be fully squeezed out. The cleaning sponge 269 is slidably installed inside the push rod 267. Under the action of the pressure spring 2610, its curved surface can fit the rubber protrusion 266, and clean the rubber protrusion 266 and the surface of the hose body 27 during the rotation of the pressure wheel 265, thereby preventing impurities from affecting the pressurized exhaust effect and the life of the hose body 27; wherein the pressure wheel 265 is provided with a guide groove 2614 on the surface, and the guide groove 2614 extends along the rotation direction of the pressure wheel 265 and the gas discharge direction. When the pressure wheel 265 squeezes the hose body 27, the guide groove 2614 can guide the gas to move more smoothly toward the exhaust pipe 33, further improving the efficiency and accuracy of gas discharge.

[0031] In some embodiments, an auxiliary mechanism 3 with a breathable film 31 is provided on one side of the hose body 27, and an exhaust pipe 33 is installed on the surface of the hose body 27, a one-way valve 32 is installed on the exhaust pipe 33, and a breathable film 31 for breathable and waterproof functions is installed on the exhaust pipe 33.

[0032] Among them, during the sampling process, excess gas will be generated inside the hose body 27 and the quantitative cylinder 251 and other components. The gas is discharged through the exhaust pipe 33. The breathable film 31 allows the gas to pass through while blocking the entry of moisture. During the sampling process, excess gas is discharged in time to maintain the internal pressure of the equipment stable, ensuring that the sampling and analysis process is not interfered with by external factors. The one-way valve 32 installed on the exhaust pipe 33 can effectively prevent the gas from flowing back into the hose body 27, thereby avoiding the impact of gas reflux on sampling accuracy and normal operation of the equipment.

[0033] In some embodiments, a quantitative component 25 with a quantitative cylinder 251 is provided between the output end of the circulation pump 21 and the hose body 27. The quantitative cylinder 251 is fixedly installed on the top of the base 1, and the quantitative cylinder 251 is connected and installed between the hose body 27 and the output end of the circulation pump 21.

[0034] Among them, the setting of the quantitative cylinder 251 allows the water sample collected by the circulating pump 21 to first enter the quantitative cylinder 251 for quantitative control. Through the connection between the quantitative cylinder 251 and the hose body 27 and the output end of the circulating pump 21, the accuracy of each sampling is ensured, thereby improving the accuracy and repeatability of water quality analysis.

[0035] In some embodiments, a filter plate 252 is installed inside the metering cylinder 251, a motor 253 is fixedly installed on the surface of the metering cylinder 251, a rotating rod 254 is rotatably installed inside the metering cylinder 251, the output shaft of the motor 253 and the rotating rod 254 are fixedly connected, a scraper 258 is fixedly installed on one end of the rotating rod 254 close to the filter screen, and the scraper 258 slides on the surface of the filter plate 252.

[0036] Among them, the filter plate 252 is installed inside the quantitative cylinder 251. After the water sample enters the quantitative cylinder 251, it can effectively filter out impurities and particulate matter in the water sample, prevent impurities from entering the subsequent sampling tube 28 and the analyzer body 29, avoid damage and interference to the detection instrument, and improve the accuracy of the detection results. The motor 253 drives the rotating rod 254 to rotate, and the scraper 258 on the rotating rod 254 slides on the surface of the filter plate 252 to scrape off impurities on the filter plate 252 in time to prevent the filter plate 252 from being blocked, thereby ensuring the continuity and stability of the filtration process and extending the service life of the filter plate 252.

[0037] In some embodiments, a spiral impeller 255 for stirring the liquid inside the metering cylinder 251 is fixedly mounted on the outer surface of the rotating rod 254 , and a resin layer is mounted on the surface of the spiral impeller 255 .

[0038] Among them, the motor 253 drives the rotating rod 254 to rotate, and the rotating rod 254 drives the spiral impeller 255 to rotate. The rotating motion of the spiral impeller 255 causes the water sample in the quantitative cylinder 251 to flow and mix, thereby achieving the purpose of uniform mixing, avoiding detection errors caused by stratification or uneven concentration of water samples, and improving the reliability of detection results. At the same time, the resin layer installed on the surface of the spiral impeller 255 can perform preliminary treatment such as adsorption and exchange of harmful substances in the water sample and extract specific components, thereby providing better quality water samples for subsequent analysis.

[0039] In some embodiments, a pressure balance column 259 is fixedly installed inside the rotating rod 254, a rotating plate 257 is rotatably installed on the outer surface of the rotating rod 254, and an air suction cylinder 256 connected to the interior of the rotating rod 254 for achieving pressure balance is installed on the outer surface of the metering cylinder 251, and a breathable strip is opened on the surface of the rotating rod 254.

[0040] Among them, when the internal pressure of the quantitative cylinder 251 changes, the pressure balance column 259 senses the pressure change, and the suction cylinder 256 is connected to the inside of the rotating rod 254 to inhale or discharge gas to adjust the pressure, so that the water sample can be output at a stable speed and pressure, ensuring the stability and accuracy of the sampling and analysis process. When the rotating plate 257 rotates, the rotating plate 257 installed on the outer surface of the rotating rod 254 rotates, and the suction cylinder 256 cooperates with the adsorption effect of the rotating plate 257, and through the connected breathable strips, the internal pressure of the quantitative cylinder 251 is flexibly adjusted to meet different sampling and analysis requirements; the interior of the suction cylinder 256 can achieve the effect of pumping and inhaling air through the action of the air pump, thereby achieving pressure improvement and ensuring internal pressure balance.

[0041] In some embodiments, a water container 23 is fixedly installed on the top of the base 1, a circulating water pipe is installed between the output end of the circulating pump 21 and the water container 23, a water inlet pipe 22 is installed between the input end of the circulating pump 21 and the water container 23, and a water outlet pipe 24 is installed between the output end of the circulating pump 21 and the quantitative cylinder 251, and sampling valves are installed on the water inlet pipe 22 and the water outlet pipe 24.

[0042] Among them, the circulation pump 21 draws water from the water container 23 through the water inlet pipe 22, and then returns the water to the water container 23 through the circulating water pipe, forming a water sample circulation system, which is convenient for multiple processing and analysis of the water sample, and improves the comprehensiveness and accuracy of the detection. The outlet pipe 24 is connected between the output end of the circulation pump 21 and the quantitative cylinder 251. Sampling valves are installed on the water inlet pipe 22 and the water outlet pipe 24, which can control the flow direction of the water sample, ensure that the water sample enters the quantitative cylinder 251 and the sampling tube 28 according to the set path, prevent the water sample from flowing back or mixing, and ensure the standardization and accuracy of the sampling process.

[0043] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. A water quality analyzer suitable for use in a pressure environment, comprising a base (1), characterized in that: A sampling mechanism (2) with a circulation pump (21) is provided at the top of the base (1), the circulation pump (21) is fixedly mounted on the top of the base (1), a sampling tube (28) is fixedly mounted on the top of the base (1), and a hose body (27) is mounted between the output end of the circulation pump (21) and the sampling tube (28); The base (1) is provided with an exhaust assembly (26) near the top of the hose body (27), and the exhaust assembly (26) includes a fixed plate (262) fixedly mounted on the top of the base (1), a driving device (261) is fixedly mounted on the surface of the fixed plate (262), and a plurality of sleeves (268) are fixedly mounted on the output shaft of the driving device (261), a push rod (267) is slidably mounted inside the sleeve (268), a pressure wheel (265) for pressurizing and exhausting is rotatably mounted on the free end of the push rod (267), a damping spring (2611) is mounted between the push rod (267) and the inner wall of the sleeve (268), a baffle (263) is fixedly mounted on the surface of the fixed plate (262), and an auxiliary air pipe (264) for supplementary exhaust is connected and mounted on the surface of the hose body (27) near the baffle (263).

2. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: An arc-shaped support plate (2612) is fixedly mounted on the outer surface of the hose body (27), and a magnetic ring (2613) for sealing the hose body (27) is adhered to the interior of the hose body (27).

3. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: A rubber strip consisting of a plurality of rubber bumps (266) is fixedly mounted on the outer surface of the pressure wheel (265), and a guide groove (2614) is provided between each two of the rubber strips. A cleaning sponge (269) is slidably mounted inside the push rod (267), and a pressure spring (2610) is fixedly mounted between the cleaning sponge (269) and the inner wall of the push rod (267). The surface of the cleaning sponge (269) close to the rubber bumps (266) is curved.

4. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: An auxiliary mechanism (3) with a breathable film (31) is provided on one side of the hose body (27). An exhaust pipe (33) is connected and installed on the surface of the hose body (27). A one-way valve (32) is installed on the exhaust pipe (33). The breathable film (31) for breathable and waterproof functions is connected and installed on the exhaust pipe (33).

5. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: A quantitative assembly (25) with a quantitative cylinder (251) is provided between the output end of the circulation pump (21) and the hose body (27). The quantitative cylinder (251) is fixedly mounted on the top end of the base (1). The quantitative cylinder (251) is communicatively mounted between the hose body (27) and the output end of the circulation pump (21).

6. The water quality analyzer suitable for use in a pressure environment according to claim 5, characterized in that: A filter plate (252) is installed inside the metering cylinder (251), a motor (253) is fixedly installed on the surface of the metering cylinder (251), a rotating rod (254) is rotatably installed inside the metering cylinder (251), an output shaft of the motor (253) and the rotating rod (254) are fixedly connected, a scraper (258) is fixedly installed on one end of the rotating rod (254) close to the filter screen, and the scraper (258) slides on the surface of the filter plate (252).

7. The water quality analyzer suitable for use in a pressure environment according to claim 6, characterized in that: A spiral impeller (255) for stirring the liquid inside the quantitative cylinder (251) is fixedly mounted on the outer surface of the rotating rod (254), and a resin layer is mounted on the surface of the spiral impeller (255).

8. The water quality analyzer suitable for use in a pressure environment according to claim 6, characterized in that: A pressure balancing column (259) is fixedly installed inside the rotating rod (254), a rotating plate (257) is rotatably installed on the outer surface of the rotating rod (254), and an air suction cylinder (256) for achieving pressure balancing and communicating with the interior of the rotating rod (254) is installed on the outer surface of the quantitative cylinder (251), and a breathable strip is provided on the surface of the rotating rod (254).

9. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: A water container (23) is fixedly mounted on the top of the base (1); a circulating water pipe is installed between the output end of the circulating pump (21) and the water container (23); a water inlet pipe (22) is installed between the input end of the circulating pump (21) and the water container (23); a water outlet pipe (24) is installed between the output end of the circulating pump (21) and the quantitative cylinder (251); and sampling valves are installed on both the water inlet pipe (22) and the water outlet pipe (24).

10. The water quality analyzer suitable for use in a pressure environment according to claim 1, characterized in that: An analyzer body (29) for detecting water samples inside the sampling tube (28) is installed on the top of the base (1), and the analyzer body (29) is layered and inserted into the sampling tube (28) using a plurality of detection rods.

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